Miniature half-feeding double-row combine harvester

Abstract

The utility model discloses a miniature half-feeding double-row combine harvester which comprises a machine frame, a cutting knife mechanism is arranged on the lower portion of the machine frame, and a threshing mechanism is arranged on the upper portion of the machine frame. The miniature half-feeding double-row combine harvester further comprises a grain lifting mechanism, a grain pulling mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism and a second transverse conveying mechanism. According to the miniature half-feeding double-row combine harvester, rice ears can be conveyed to the rear feeding groove through the longitudinal conveying mechanism before rice straw is cut off, and after the rice straw is cut off through the cutting knife mechanism, the rice straw can transversely move in the axial direction of the roller under conveying of the first transverse conveying mechanism and the second transverse conveying mechanism; and in the transverse moving process of the rice straw, the threshing cylinder acts on rice ears to realize threshing. Due to the fact that rice ears of cut rice are directly fed into the threshing roller to be threshed, compared with an existing semi-feeding combine harvester, a middle conveying mechanism is omitted, and the whole harvester is simpler in structure, lower in energy consumption and lighter in weight.

Description

Technical Field

[0001] The utility model relates to the technical field of combine harvesters, in particular to a miniature semi-feeding double-row combine harvester. Background Art

[0002] In order to address the shortcomings of existing combine harvesters in terms of energy consumption, volume, and weight, the utility model applicant previously proposed utility model patents with application number 2020112809953, entitled "Combine Harvester Semi-Feeding Harvesting Operating Mechanism," application number 2021104781467, entitled "Semi-Feeding Combine Harvester Operating Mechanism," and application number 2019103400507, entitled "Top-Mounted Bending Semi-Feeding Combine Harvester." However, when the combine harvesters in the aforementioned patents are in operation, the cut rice ears need to be diverted and transported through intermediate conveying mechanisms such as bending conveyor chains during the lateral conveying process of the combine harvester before they can enter the threshing drum for threshing. This increases the complexity of the structure of the micro combine harvester and also increases the energy consumption of the machine. Therefore, it is necessary to optimize and improve its structure. At the same time, since the layout of the various operating mechanisms is relatively scattered, the transmission path from the gearbox to the various operating mechanisms is long, which also leads to poor compactness of the overall structure. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a miniature semi-feed double-row combine harvester to solve the technical problem that the existing semi-feed combine harvester needs to use a complex steering and conveying mechanism to feed the harvested rice into the shedding drum for threshing, resulting in a complex structure of the miniature combine harvester and increased energy consumption.

[0004] The utility model discloses a miniature semi-feed double-row combine harvester, comprising a frame, a cutter mechanism being provided at the lower portion of the frame, a threshing mechanism being provided at the upper portion of the frame, the threshing mechanism comprising a cover shell provided on the frame, a threshing drum, a sorting screen located below the threshing drum, and a screw conveyor located below the sorting screen being provided in the cover shell, a rice ear entrance opening being provided at one end of the cover shell, a rice ear discharge opening being provided at the other end of the cover shell, a transverse opening for the rice ear to move axially along the threshing drum being provided at the middle portion of the front side of the cover shell, a feeding trough being provided on the frame and being connected to the rice ear entrance opening, the miniature semi-feed double-row combine harvester further comprising a rice grain supporting mechanism, a rice grain pulling mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism;

[0005] The rice supporting mechanism includes a left rice supporting plate, a middle rice supporting plate and a right rice supporting plate fixed obliquely in front of the frame, a first passage for a row of rice to enter is formed between the left rice supporting plate and the middle rice supporting plate, and a second passage for another row of rice to enter is formed between the middle rice supporting plate and the right rice supporting plate;

[0006] The reel mechanism comprises an upper reel and a lower reel having the same rotation direction;

[0007] The longitudinal conveying mechanism includes a first housing, a first chain located in the housing, a sprocket engaged with the first chain, and rice ear conveying teeth disposed on the first chain; a third channel for rice to pass through is disposed adjacent to the first housing, the rear end of the first channel, the rear end of the second channel, and the front end of the third channel intersecting and interconnecting, and the rear end of the third channel is connected to a feeding trough; the front end of the longitudinal conveying mechanism is disposed at the entrance of the third channel, and the rear end of the longitudinal conveying mechanism is disposed within the feeding trough; the upper reel is located at the exit of the second channel, and the upper reel rotates under the action of the rice ear conveying teeth;

[0008] The first transverse conveying mechanism includes a second housing located in the middle of the frame, a second chain arranged in the second housing, a sprocket coordinated with the second chain, and rice straw conveying teeth provided on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw conveying teeth;

[0009] The second transverse conveying mechanism includes a third chain located next to the transverse opening on the cover shell, a sprocket cooperating with the third chain, rice straw clamping teeth arranged on the third chain, and a pressure plate cooperating with the clamping teeth to clamp the rice straw; the rice ear sending teeth of the longitudinal conveying mechanism are used to bend the rice ears backward during movement and send them between the rice straw clamping teeth.

[0010] Furthermore, the miniature semi-feeding double-row combine harvester also includes a gearbox assembly, which includes a first gearbox, a second gearbox, a third gearbox and a fourth gearbox. The first gearbox is arranged on the feed side of the threshing mechanism, the first gearbox is connected to the power, and the first gearbox directly outputs the power to the threshing drum, the screw conveyor, the second gearbox and the third gearbox; the second gearbox directly outputs the power to the longitudinal conveying mechanism and the second transverse conveying mechanism; the third gearbox directly outputs the power to the first transverse conveying mechanism and the fourth gearbox, and the fourth gearbox directly outputs the power to the cutter mechanism.

[0011] Furthermore, a grass discharge cavity is provided between the end of the threshing drum and the end of the cover shell, a grass discharge port is provided at the lower part of the grass discharge cavity, a grass discharge plate connected to the shedding drum is provided in the grass discharge cavity, and a spiral guide groove is provided on the inner side of the upper plate part of the cover shell for guiding the straw into the grass discharge cavity.

[0012] Beneficial effects of the utility model:

[0013] 1. The miniature semi-feeding double-row combine harvester of the present invention can directly bend the rice ears backward through the longitudinal conveying mechanism and feed them into the rice stalk clamping teeth and feeding trough of the second transverse conveying mechanism. After the rice stalks are cut by the cutting knife mechanism, the rice stalks can be transported transversely along the axial direction of the drum under the transportation of the first transverse conveying mechanism and the second transverse conveying mechanism. During the transverse movement of the rice stalks, the threshing drum acts on the rice ears to realize threshing.

[0014] Since the cut rice ears are directly transported by the longitudinal conveying mechanism to the feeding port of the shedding drum threshing, the longitudinal conveying mechanism itself has a bending conveying function and no independent bending conveying chain needs to be set up. Compared with the existing semi-feeding combine harvesters, the intermediate conveying mechanism is eliminated, the conveying path is shortened, the overall structure of the machine is simpler, the energy consumption is lower, and the weight of the whole machine is also lighter.

[0015] 2. The miniature semi-feeding double-row combine harvester of the present invention can harvest two rows of rice at the same time. Compared with the miniature combine harvester which can only harvest a single row, the harvesting efficiency is higher.

[0016] 3. In the miniature semi-feed double-row combine harvester of the present invention, since only the rice ears are fed into the shedding drum, this semi-feed shedding method greatly reduces energy consumption compared to the combine harvester in which the rice stalks are fed as a whole into the threshing drum. In addition, the threshing operation produces less weeds and makes better use of the screening and separation of grains and weeds.

[0017] 4. In the miniature semi-feeding double-row combine harvester of the present invention, each gearbox in the gearbox assembly directly outputs power to each operating mechanism, and the transmission path is short, making the overall structure of the machine more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front perspective diagram of a miniature semi-feed double-row combine harvester.

[0019] Figure 2 This is a three-dimensional schematic diagram of the discharge side of a miniature semi-feed double-row combine harvester.

[0020] Figure 3 This is a three-dimensional schematic diagram of the feeding side of a miniature semi-feeding two-row combine harvester.

[0021] Figure 4 This is a three-dimensional schematic diagram of a miniature semi-feed double-row combine harvester after the gearbox housing is removed.

[0022] Figure 5 This is a three-dimensional schematic diagram of the bottom side of a miniature semi-feed double-row combine harvester.

[0023] Figure 6 It is a three-dimensional schematic diagram of a miniature semi-feed double-row combine harvester with the upper half of the threshing drum cover removed. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] As shown in the figure, the miniature semi-fed double-row combine harvester in this embodiment includes a frame 1. In a specific implementation, the frame 1 is mounted on the combine harvester's running gear, which can be a crawler-type running gear or a wheeled running gear. A cutter mechanism 2 is mounted at the bottom of the frame, and a threshing mechanism is mounted at the top of the frame. The threshing mechanism includes a housing 3 mounted on the frame, within which a threshing drum 4, a sorting screen 5 located below the threshing drum, and a screw conveyor 6 located below the sorting screen are located. A rice ear inlet 7 is located at one end of the housing, and a rice ear outlet 8 is located at the other end of the housing. A transverse opening 9 is located in the middle of the front side of the housing for the rice ears to move axially along the threshing drum. A feed trough 10 connected to the rice ear inlet is mounted on the frame. The miniature semi-fed double-row combine harvester also includes a stalk supporting mechanism, a stalk-moving mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism.

[0026] The rice supporting mechanism includes a left rice supporting plate 11, a middle rice supporting plate 12 and a right rice supporting plate 13 which are fixed obliquely in front of the frame. A first channel 14 for a row of rice to enter is formed between the left rice supporting plate and the middle rice supporting plate, and a second channel 15 for another row of rice to enter is formed between the middle rice supporting plate and the right rice supporting plate.

[0027] The reel mechanism includes an upper reel 16 and a lower reel 17 which rotate in the same direction.

[0028] The longitudinal conveying mechanism includes a first shell 18, a first chain 19 located in the shell, a sprocket 20 cooperating with the first chain, and a rice ear feeding tooth 21 arranged on the first chain. A third channel 22 for rice to pass through is arranged next to the first shell. The rear end of the first channel, the rear end of the second channel and the front end of the third channel are intertwined and connected to each other, and the rear end of the third channel is connected to the feeding trough 10. The front end of the longitudinal conveying mechanism is arranged at the entrance of the third channel, and the rear end of the longitudinal conveying mechanism is arranged in the feeding trough, and the rear end of the longitudinal conveying mechanism is higher than the front end; the longitudinal conveying mechanism is tilted in such a way that the rear end is higher than the front end. The upper reel is located at the exit of the second channel, and the upper reel rotates under the action of the rice ear feeding tooth.

[0029] The first transverse conveying mechanism includes a second shell 23 located in the middle of the frame, a second chain 24 arranged in the second shell, a sprocket 25 cooperating with the second chain, and rice straw transmission teeth 26 set on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw transmission teeth.

[0030] The second transverse conveying mechanism includes a third chain 27 located next to the transverse opening 9 on the cover shell, a sprocket 28 cooperating with the third chain, rice straw clamping teeth 29 arranged on the third chain, and a pressure plate 30 cooperating with the clamping teeth to clamp the rice straw; the rice ear sending teeth of the longitudinal conveying mechanism are used to bend the rice ears backward during movement and send them into the rice straw clamping teeth.

[0031] The miniature semi-feed double-row combine harvester described in this embodiment also includes a gearbox assembly, which includes a first gearbox 31, a second gearbox 32, a third gearbox 33 and a fourth gearbox 34. The first gearbox is arranged on the feed side of the threshing mechanism, and the first gearbox is connected to the power, specifically the first gearbox is connected to the power through a pulley 35; and the first gearbox directly outputs the power to the threshing drum, the screw conveyor, the second gearbox and the third gearbox; the sprocket in the first gearbox is connected to the shaft of the threshing drum, as shown in FIG. Figure 5 The first gearbox sprocket is connected to the shaft of the screw conveyor, such as Figure 5 As shown. Figure 4 As shown, the power output by the first gearbox 31 is output after being redirected by the bevel gear 36 in the second gearbox 32. The second gearbox outputs the power directly to the longitudinal conveying mechanism and the second transverse conveying mechanism through two shafts. Figure 4 As shown, the power output from the first gearbox 31 is redirected by the bevel gear 37 in the third gearbox 33 and then transmitted to the first transverse conveying mechanism and the fourth gearbox via the sprocket chain mechanism 38 and shaft 39 in the third gearbox 33. The fourth gearbox outputs power directly to the cutter mechanism 2 via the sprocket chain mechanism and output shaft 40 therein.

[0032] In this embodiment, a grass discharge cavity is provided between the end of the threshing drum and the end of the cover shell, a grass discharge port 41 is provided at the lower part of the grass discharge cavity, a grass discharge plate 42 connected to the shedding drum is provided in the grass discharge cavity, and a spiral guide groove 43 for guiding the straw into the grass discharge cavity is provided on the inner side of the upper plate part of the cover shell.

[0033] The working principle of the miniature semi-feeding double-row combine harvester in this embodiment is as follows:

[0034] As the combine harvester moves forward, two rows of rice enter the first channel 14 and the second channel 15, respectively. When the rice entering the first channel 14 reaches the rear of the first channel 14, it is pushed into the third channel 22 by the upper and lower reel wheels 16 and 17. The second and third channels 15 and 22 are connected in a straight line, so the rice in the second channel 15 can directly enter the third channel 22 as the combine harvester moves forward. The rice entering the third channel 22 is pushed backward by the rice ear feeding teeth 21 of the longitudinal conveying mechanism and enters the feeding trough 10. The rice ears entering the feeding trough 10 are driven along the transverse opening 9 by the second transverse conveying mechanism. At the same time, the cutter mechanism cuts off the lower end of the rice stalk, and the cut rice stalk is pushed laterally by the first transverse conveying mechanism.

[0035] The process of the second lateral conveying mechanism driving the rice ear portion to move horizontally is as follows: the rice straw clamping teeth 29 push the rice ear portion of the feeding trough 10 to continuously enter between the pressing plate 30 and the rice straw clamping teeth 29, and the feeding end of the pressing plate 30 is provided with a chamfer 44 to guide the rice ear portion to enter between the pressing plate 30 and the rice straw clamping teeth 29. After entering, the pressing plate 30 and the rice straw clamping teeth 29 cooperate to clamp the rice straw at the end of the rice ear portion, so as to reliably ensure that the rice straw is not dragged into the cover shell by the threshing drum during the lateral movement of the rice ear portion for threshing.

[0036] The process of the first transverse conveying mechanism driving the rice straw to move transversely is as follows: the cut rice straw moves transversely under the push of the rice straw conveying teeth 26, and when the transversely moved rice straw moves to the lower reel 17, the lower reel 17 can push the rice straw into between adjacent rice straw conveying teeth 26 and cooperate with the rice straw conveying teeth 26 to push the rice straw to move transversely.

[0037] During the transverse movement of the rice ears along the threshing drum, the rotating threshing drum 4 acts on the rice ears to realize threshing, and the sorting screen 5 sorts the rice and weeds produced by threshing. The rice falling from the sorting screen 5 enters the screw conveyor 6, and the screw conveyor 6 pushes the rice to the rice thrower 45 and throws it out. The weeds enter the grass discharge cavity under the push of the threshing drum and the guidance of the guide groove 43. The weeds entering the grass discharge cavity are pushed by the grass discharge plate 42 and discharged from the grass discharge port 41.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A miniature semi-feed double-row combine harvester, comprising a frame, a cutter mechanism provided at the lower portion of the frame, a threshing mechanism provided at the upper portion of the frame, the threshing mechanism comprising a cover provided on the frame, a threshing drum, a sorting screen located below the threshing drum, and a screw conveyor located below the sorting screen provided within the cover, a rice ear inlet provided at one end of the cover, a rice ear outlet provided at the other end of the cover, a transverse opening provided in the middle portion of the front side of the cover for the rice ears to move axially along the threshing drum, a feeding trough connected to the rice ear inlet provided on the frame, and characterized in that: The miniature semi-feeding double-row combine harvester further comprises a stalk supporting mechanism, a stalk pulling mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism; The rice supporting mechanism includes a left rice supporting plate, a middle rice supporting plate and a right rice supporting plate fixed obliquely in front of the frame, a first passage for a row of rice to enter is formed between the left rice supporting plate and the middle rice supporting plate, and a second passage for another row of rice to enter is formed between the middle rice supporting plate and the right rice supporting plate; The reel mechanism comprises an upper reel and a lower reel having the same rotation direction; The longitudinal conveying mechanism includes a first housing, a first chain located in the housing, a sprocket engaged with the first chain, and rice ear conveying teeth disposed on the first chain; a third channel for rice to pass through is disposed adjacent to the first housing, the rear end of the first channel, the rear end of the second channel, and the front end of the third channel intersecting and interconnecting, and the rear end of the third channel is connected to a feeding trough; the front end of the longitudinal conveying mechanism is disposed at the entrance of the third channel, and the rear end of the longitudinal conveying mechanism is disposed within the feeding trough; the upper reel is located at the exit of the second channel, and the upper reel rotates under the action of the rice ear conveying teeth; The first transverse conveying mechanism includes a second housing located in the middle of the frame, a second chain arranged in the second housing, a sprocket coordinated with the second chain, and rice straw conveying teeth provided on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw conveying teeth; The second transverse conveying mechanism includes a third chain located next to the transverse opening on the cover shell, a sprocket cooperating with the third chain, rice straw clamping teeth arranged on the third chain, and a pressure plate cooperating with the clamping teeth to clamp the rice straw; the rice ear sending teeth of the longitudinal conveying mechanism are used to bend the rice ears backward during movement and send them between the rice straw clamping teeth.

2. The miniature semi-feed double-row combine harvester according to claim 1, characterized in that: It also includes a gearbox assembly, which includes a first gearbox, a second gearbox, a third gearbox and a fourth gearbox. The first gearbox is arranged on the feed side of the threshing mechanism, the first gearbox is connected to the power, and the first gearbox directly outputs the power to the threshing drum, the screw conveyor, the second gearbox and the third gearbox; the second gearbox directly outputs the power to the longitudinal conveying mechanism and the second transverse conveying mechanism; the third gearbox directly outputs the power to the first transverse conveying mechanism and the fourth gearbox, and the fourth gearbox directly outputs the power to the cutter mechanism.

3. The miniature semi-feed double-row combine harvester according to claim 1, characterized in that: A grass discharge cavity is provided between the end of the threshing drum and the end of the cover shell, a grass discharge port is provided at the lower part of the grass discharge cavity, a grass discharge plate connected to the shedding drum is provided in the grass discharge cavity, and a spiral guide groove is provided on the inner side of the upper plate part of the cover shell for guiding the straw into the grass discharge cavity.

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